The M5 (.308) B5 SOPMOD Complete Lower Receiver is the perfect base for your custom big bore rifle build. This complete lower features B5 Systems furniture and our M5 Lower Receiver. Save when you buy it complete and let our specialists do the installation for you!

Features:

Works with standard DPMS 308 components and magazines

Rear takedown pin detent hole is threaded for a 4-40 set screw

Bolt catch is threaded for a screw pin (no roll pin needed)

Integrated trigger guard

Selector markings will work with 45, 60 or 90 degree safety selectors

Accepts Battle Arms Development short throw safety selectors, but will work with any standard selector

No gap with aftermarket pistol grips

Includes:

M5 Lower Receiver - FDE Cerakote

B5 Systems SOPMOD Stock - FDE

B5 Systems P-Grip 23 - FDE

M5 .308 Specific Lower Parts Kit

Receiver Extension

.308 Carbine Buffer and Spring

These parts are installed

FFL Terms and Conditions

- Any items placed on the same order as a controlled item will also be shipped to the FFL. If you would like additional items shipped to you directly, please place them on a separate order.

- Please enter your information or the receiving party's (the person that will be picking it up) information under "Recipient Name" while checking out. There will be a seperate field for FFL name, phone and zip code and we will obtain the shipping address directly from them.

- To expedite your order, please have your dealer fax or email their FFL to us. If the dealer you are using to transfer a firearm has not sent us a currently updated FFL to put on file, there will be an extended period of time needed to process your order.

There will be a 30% restocking fee on all controlled items returned because of failed background checks.

Federal law requires that you be 21 years or age or older to purchase a stripped receiver or frame. If a frame or receiver can only be made into a long gun (rifle or shotgun), it is still a frame or receiver not a handgun or long gun. However, they still are "firearms" by definition, and subject to the same GCA limitations as any other firearms. See Section 921(a)(3)(b). 18 U.S.C. Section 922(b)(1) makes it unlawful for a licensee to sell any firearm other than a shotgun or rifle to any person under the age of 21.